<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */


/**
 * Smarty escape modifier plugin
 *
 * Type:     modifier<br>
 * Name:     escape<br>
 * Purpose:  Escape the string according to escapement type
 * @link http://smarty.php.net/manual/en/language.modifier.escape.php
 *          escape (Smarty online manual)
 * @author   Monte Ohrt <monte at ohrt dot com>
 * @param string
 * @param html|htmlall|url|quotes|hex|hexentity|javascript
 * @return string
 */
function smarty_modifier_escape($string, $esc_type = 'html', $char_set = 'ISO-8859-1') {
  switch ($esc_type) {
    case 'html':
      return htmlspecialchars($string, ENT_QUOTES, $char_set);

    case 'htmlall':
      return htmlentities($string, ENT_QUOTES, $char_set);

    case 'url':
      return rawurlencode($string);

    case 'urlpathinfo':
      return str_replace('%2F','/',rawurlencode($string));

    case 'quotes':
    // escape unescaped single quotes
      return preg_replace("%(?<!\\\\)'%", "\\'", $string);

    case 'hex':
    // escape every character into hex
      $return = '';
      for ($x=0; $x < strlen($string); $x++) {
        $return .= '%' . bin2hex($string[$x]);
      }
      return $return;

    case 'hexentity':
      $return = '';
      for ($x=0; $x < strlen($string); $x++) {
        $return .= '&#x' . bin2hex($string[$x]) . ';';
      }
      return $return;

    case 'decentity':
      $return = '';
      for ($x=0; $x < strlen($string); $x++) {
        $return .= '&#' . ord($string[$x]) . ';';
      }
      return $return;

    case 'javascript':
    // escape quotes and backslashes, newlines, etc.
      return strtr($string, array('\\'=>'\\\\',"'"=>"\\'",'"'=>'\\"',"\r"=>'\\r',"\n"=>'\\n','</'=>'<\/'));

    case 'mail':
    // safe way to display e-mail address on a web page
      return str_replace(array('@', '.'),array(' [AT] ', ' [DOT] '), $string);

    case 'nonstd':
    // escape non-standard chars, such as ms document quotes
      $_res = '';
      for($_i = 0, $_len = strlen($string); $_i < $_len; $_i++) {
        $_ord = ord(substr($string, $_i, 1));
        // non-standard char, escape it
        if($_ord >= 126) {
          $_res .= '&#' . $_ord . ';';
        }
        else {
          $_res .= substr($string, $_i, 1);
        }
      }
      return $_res;

    default:
      return $string;
  }
}

/* vim: set expandtab: */

?>
